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(N0 Medal.)

T. R. FIRTH.

GAS REGULATOR.

No. 356,684. Patented. Jan. 25, 1887.:

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UNITED STATES PATENT THOMAS R. FIRTH, OF NEWPORT, KENTUCKY, ASSIGNOR OFTVVO-THIRDS TO JAMES M. REED AND EDWARD G. FIRTH, BOTH OF SAME PLACE.

GAS-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 356,684, dated January25, 1887,

Application filed September 28, 1886. Serial No. 214,803. (No model.)

To all whom it may concern:

Be it known that I, THGMAS It. FIRTH, a resident of Newport, in thecounty of Campbell and State of Kentucky, have invented certain new anduseful Improvements in Gas- Regulators, of which the following is aspecification.

The object of my invention is to have a sensitive and durable automaticregulator for controlling or equalizing the pressure of gas in the pipesto distribute the same to the different apartments of the building, allof which will be fully set forth in the description of the accompanyingdrawings, making a part of this specification, in which Figure 1 isavertical central section of my improvement. Fig. 2 is a sectionalelevation of the tubular chamber and discharge-orifice.

1 represents the point of attaching the regulater to the gas-meter.

2 represents the point of attaching the supply-pipe for thebnrncnsnrfnces for the building to he lighted.

3 represents the liquid-chamber, in which is suspended a float, 4-.

5 represents the stem, attached at its upper end to the dome 4, and itslower end projecting down through the same, and is provided with apressureplate, 6.

7 represents a passage leading up through the stem 5 and connected byorifices 10 to the tube 8, which is open at the top, and over which dome4 rises and falls with the regulation of the pressure.

9 represents the gas-compartment above the 3 5 liquid 13 within the dome4.

14 represents a partition which directs the gas normally throughtubularchamber 12 and through orifice 11.

Mode of operation: The regulator is con- 0 nccted to the meter and pipe-surface, as before explained. The regulation of the pressure iseffected by the rising and falling of the dome 4 and the compression ofthe gas in said dome between it and the liquid, thereby increasing 5 anddecreasing the size of orifice 11.

Having described my invention, what I claim as new is- A regulatorconsisting of a liquid-chamber,

a float therein, a gaschaniber, 12, a tubular 50 stem, 5, apressure-plate, 6, suspendcdin said gaschamher from the float by thesaid stem, and the gas-outlet orifice 11, which is opened or closed moreor less by the descent and ascent of the float and pressure-plate,substantially as 55 described.

In testimony whereof I have hereunto set my hand.

THOMAS H. FIRTH.

Witnesses:

ROBERT ZAHNER, J. WATsoN SIMS.

